Inventory model for a multi-echelon system with unidirectional lateral transshipment

Patriarca, Riccardo; Costantino, Francesco; Gravio, Giulio Di

doi:10.1016/j.eswa.2016.09.001

Cited by 36 publications

(9 citation statements)

References 53 publications

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“…Recently, in [27], the authors applied the VARI-METRIC in designing an innovative model of spare parts allocation problem, aimed at minimizing backorders and ensuring system availability. Based on METRIC, Patriarca et al [28] developed a novel system-approach model to address the stock allocation within a complex network, where unidirectional lateral transshipment has been concretely considered. Patriarca et al [29] extended METRIC by considering a specific performance based contract (called PBC-METRIC), whose performance is demonstrated in a case study on a European airline that aims at reducing the ownership cost for the customer airline, while ensuring a target system performance.…”

Section: Methodologies For Distribution Inventory Systemsmentioning

confidence: 99%

A Two-Echelon Inventory System with a Minimum Order Quantity Requirement

2019

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In this paper, we study a two-echelon inventory system with one warehouse and multiple retailers, under the setting of periodic review and infinite horizon. In each period, retailers replenish their stocks from the warehouse, and the warehouse in turn replenishes from an external supplier. Particularly, as stipulated by the supplier, there is a minimum order quantity (MOQ) requirement for the warehouse. That is, the warehouse must order either none or at least as much as the MOQ. To investigate this system analytically, we assume retailers adopt the base-stock policy, and we design for the warehouse a new heuristic ordering policy, called refined base-stock policy, which conforms to the MOQ requirement. Moreover, in the case of shortages, we assume the warehouse adopts a virtual allocation policy, and therefore the orders for individual units are filled in the same order as the original demands at the retailers. To evaluate the long-run average system cost exactly, we present a position-based cost-accounting scheme, in which the cost associated with each unit is assigned to its first position at the warehouse. We also derive lower and upper bounds of the inventory parameters, facilitating the search for the optimal policy that minimizes the long-run average system cost.

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Section: Methodologies For Distribution Inventory Systemsmentioning

confidence: 99%

A Two-Echelon Inventory System with a Minimum Order Quantity Requirement

2019

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“…Khorshidi et al 133 used genetic algorithms to model for the redundancy system to determine the best redundancy configuration and inventory configuration. Patriarca et al 134 optimized the inventory level of repairable spare parts in a complex network through genetic algorithm. Cai et al 135 developed a combined method of genetic algorithm and Monte Carlo to get the optimal inventory level, safety level and potential failure threshold, and proposed an appointment policy of spare parts based on the prediction of residual life.…”

Section: Optimization Algorithms Of Spare Parts Configurationmentioning

confidence: 99%

Civil Aircraft Spare Parts Prediction and Configuration Management Techniques: Review and Prospect

Feng

Chen

et al. 2021

Advances in Mechanical Engineering

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Spare parts are treated as the basis to guarantee the safe and economic operation of civil aircraft, its scientific prediction and reasonable configuration play an important role in perfecting integrated logistics support (ILS) and achieving win-win situation of stakeholders (e.g. manufacturers, operators, maintenance providers). This paper studies the existing spare parts prediction and configuration methods of civil aircraft, and discusses future development trend of spare parts from the perspective of prediction and configuration, respectively. The current development status of civil aircraft spare parts prediction techniques are firstly introduced, according to demand characteristics of spare parts; the present research status of civil aircraft spare parts configuration methods are then elaborated, based on the traditional methods and machine learning methods; the development trend of civil aircraft spare parts prediction and configuration methods is finally analyzed, combined with the advantages and disadvantages of the existing methods of civil aircraft spare parts management methods. The efforts of this work provide a reference for the comprehensive management of civil aircraft spare parts and improve the perfection degree for the ILS of civil aircraft.

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“…The results have been verified through a simulation model, developed in MATLAB. The simulation model aims at calculating the actual number of Back Orders (BOs), by means of the demand dataset, and by a week-by-week calculation of relevant inventory variables, following the simple logic summarized in (13). The purpose of this phase is understanding whether the DW-METRIC may actually be more accurate than the traditional Poisson-based METRIC.…”

Section: Simulation Modelmentioning

confidence: 99%

A System-Approach for Recoverable Spare Parts Management Using the Discrete Weibull Distribution

Patriarca

Costantino

et al. 2019

Sustainability

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Optimal spare parts management strategies allow sustaining a system’s availability, while ensuring timely and effective maintenance. Following a systemic perspective, this paper starts from the Multi-Echelon Technique for Recoverable Item Control (METRIC) to investigate the potential use of a Weibull distribution for modelling items’ demand in case of failure. Adapting the analytic formulation of METRIC through a Discrete Weibull distribution, this study originally proposes a METRIC-based model (DW-METRIC) to be used for modelling the stochastic demand in multi-item systems, in order to ensure process sustainability. The DW-METRIC has been tested in a case study related to an industrial plant constituted by 98 items in a passive redundancy configuration. Comparing the results via a simulation model, the outcomes of the study allow defining applicability criteria for the DW-METRIC, in those settings where the DW-METRIC offers more accurate estimations than the traditional METRIC.

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Inventory model for a multi-echelon system with unidirectional lateral transshipment

Cited by 36 publications

References 53 publications

A Two-Echelon Inventory System with a Minimum Order Quantity Requirement

A Two-Echelon Inventory System with a Minimum Order Quantity Requirement

Civil Aircraft Spare Parts Prediction and Configuration Management Techniques: Review and Prospect

A System-Approach for Recoverable Spare Parts Management Using the Discrete Weibull Distribution

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